Ruam

Rau sloths, lub ntiaj teb no feem ntau yog upside down: Lawv dai lub taub hau thiab rov qab rau hauv cov ntoo thiab tsuas yog txav mus qeeb.

Cov yam ntxwv

Cov sloth zoo li cas?

Sloths yog tsiaj txhu. Lawv zwm rau tus superorder ntawm cov tsiaj ntawv thib ob. Lawv thiaj li hu ua vim qee qhov ntawm lawv cov thoracic thiab lumbar vertebrae muaj cov pob qij txha ntxiv uas lwm cov tsiaj tsis muaj. Lawv koom ntxiv rau qhov kev txiav txim ntawm cov hniav caj npab thiab tsim ob tsev neeg: peb-toed sloths (Bradypodidae) thiab ob-toed sloths (Choloepidae).

Peb-toed sloths ntev txog 50 centimeters thiab hnyav txog li tsib kilograms, ob-toed sloths yog loj dua: lawv ntev txog li 75 centimeters thiab hnyav txog li cuaj kilograms. Hauv qee hom sloths, ob txhais ceg pem hauv ntej ntev dua li ob txhais ceg. Hom rau sloths yog hom thiab tus naj npawb ntawm cov ntiv taw thiab: Lawv yog ib feem fused. Hloov ntawm tsib ntiv taw, txhua tus sloths tsuas muaj peb ntiv taw ntawm lawv ob txhais ceg.

Qhov peb-toed sloth muaj peb tus ntiv tes ntawm txhua tus ceg hauv ntej, thaum ob-toed sloth tsuas muaj ob ntiv tes xwb. Cov no muaj claws mus txog peb ntiv tes ntev - zoo meej hooks rau clinging ntoo ceg nrog lub cev thiab lub taub hau dai. Ib qho tshwj xeeb ntawm sloths yog lawv cov txha nraub qaum ntawm ncauj tsev menyuam: lawv tuaj yeem tig lawv lub taub hau 180 degrees.

Txawm tias lawv ntev, me ntsis shaggy fur tsis loj hlob raws li peb paub los ntawm lwm yam tsiaj: lub kaus mom tsis khiav raws sab nraub qaum, tab sis ntawm lub plab. Qhov no tso cai rau cov nag khiav tawm ntawm cov tsiaj nyeg dai ntawm tsob ntoo. Tsis tas li ntawd, cov plaub ntawm sloths feem ntau yog xim ntsuab ntsuab. Qhov laj thawj yog microscopic algae uas nyob hauv cov tsiaj plaub.

Cov algae tuaj yeem loj hlob zoo nyob rau hauv qhov sov, ntub dej ntawm cov plaub hau, thaum cov sloths tau zoo kawg nkaus camouflaged hauv hav zoov ntoo ua tsaug rau cov xim ntsuab ntawm lawv cov plaub. Ua tsaug rau lawv lub taub hau puag ncig nrog lub ntsej muag tiaj tus thiab me me, pob ntseg puag ncig, sloths zoo li me ntsis funny los yog amazing leprechauns.

sloths nyob qhov twg?

Sloths tsuas yog pom nyob rau hauv Central thiab South America, yav qab teb txwv ntawm lawv tshwm sim yog nyob rau hauv Peru thiab yav qab teb Brazil. Sloths siv feem ntau ntawm lawv lub neej nyob rau hauv treetops ntawm tropical rainforests.

Dab tsi ntawm sloths muaj?

Muaj ob tsev neeg nyob rau hauv lub sloth suborder: peb-toed sloth tsev neeg muaj xws li collared sloth (Bradypus torquatus), lub xim av-throated sloth (Bradypus variegatus), thiab lub dawb-throated sloth (Bradypus tridactylus). Lwm hom, Bradypus pygmaeus, tsuas yog pom ntawm ib lub kob tawm ntawm ntug dej hiav txwv ntawm Panama. Tsev neeg ntawm ob-toed sloths (Cholooepidae) suav nrog qhov tseeb ob-toed sloth (Choloepus didactylus), uas tseem hu ua Unau, thiab Hoffmann ob-toed sloth (Choloepus hoffmanni). Cov txheeb ze ze ntawm sloths yog anteaters thiab armadillos

Puas muaj hnub nyoog li cas sloths tau txais?

Raws nraim li cas qub sloths tau nyob rau hauv cov qus tsis paub. Qee cov kws tshawb fawb xav tias lawv nyob 30 txog 40 xyoo. Ob-toed sloth feem ntau khaws cia hauv cov tsiaj txhu. Ib txhia ntawm lawv nyob ntawd tau ntau tshaj 20 xyoo.

Coj cwj pwm

sloths nyob li cas?

Sloths yog cov phooj ywg yooj yim mus thiab raug suav tias yog cov tsiaj qis tshaj. Lawv feem ntau siv lawv lub sijhawm nyob ntsiag to hauv tsob ntoo. Lawv feem ntau dai ntawm lawv cov claws ntawm ib ceg, curl up, nteg lawv lub taub hau ntawm lawv lub hauv siab thiab pw txog 15 teev ib hnub twg. Los yog lawv zaum hauv txoj hauj lwm no hauv ib ceg nkhaus.

Thaum lawv sawv, lawv pib nrhiav zaub mov, tab sis txawm tias tom qab ntawd lawv txav mus zoo li qeeb qeeb: cov tsiaj shimmy raws ceg, dai rov qab. Yog tias lawv tsis tuaj yeem ncav cuag lawv cov zaub mov, xws li nplooj, txiv hmab txiv ntoo, thiab paj, ncaj qha nrog lawv lub qhov ncauj, lawv tuav nrog lawv cov claws. Sloths tsuas yog tawm ntawm tsob ntoo thaum tsis muaj zaub mov ntxiv thiab tsis muaj lwm tsob ntoo tuaj yeem ncav cuag ncaj qha. Tom qab ntawd lawv nce mus rau hauv av thiab nkag mus rau lwm tsob ntoo.

Koj tsuas tuaj yeem nkag mus rau pem hauv ntej nrog koj ob txhais ceg pw ntawm koj lub plab. Hauv dej, ntawm qhov tod tes, lawv ua pov thawj tias yog cov neeg ua luam dej zoo. Tab sis cov neeg nyob hauv hav zoov no puas muaj lub npe "sloth" tiag tiag? Txawm hais tias lawv pw txog 15 teev hauv ib hnub, cov lus teb tsis yog. Vim hais tias sloths tsis yog tub nkeeg tab sis tau cleverly yoog raws lawv cov kev nyob tshwj xeeb. Vim tias lawv cov zaub mov yooj yim nkag mus tau yooj yim, tsis tas yuav tsum tau txav mus sai. Tsis tas li vim tias cov zaub mov uas cog tsis muaj zog ntau, txoj kev qeeb ntawm lub neej ntawm cov tsiaj tau ua pov thawj nws tus kheej. Lawv siv zog tsawg dua thiab tuaj yeem tau txais nrog cov zaub mov cog.

Tsis tas li ntawd, lawv txoj kev qeeb qeeb muaj lwm qhov zoo dua: Yog tias koj tsis dhia tawm ntawm cov ceg ntoo, koj yuav tsis tshua pom cov yeeb ncuab. Tus neeg tua tsiaj yuav tsis yooj yim pom cov sloths, uas txav ntawm tus qwj lub nrawm. Tsis tas li ntawd, cov plaub hau ntsuab uas tshwm sim los ntawm cov algae kom ntseeg tau tias cov tsiaj no zoo kawg nkaus camouflaged thiab yuav luag tsis pom.

Cov phooj ywg thiab cov yeeb ncuab ntawm tus sloth

Ntxiv nrog rau cov tsiaj nyeg, tib neeg yog qhov txaus ntshai tshwj xeeb: sloths raug tua hauv qee thaj tsam ntawm South America. Lawv cov nqaij yog noj thiab lawv cov plaub yog siv los ua ib lub eeb ntaub.

Yuav ua li cas sloths reproduce?

Sloths tuaj yeem loj hlob txhua xyoo puag ncig. Lub sijhawm gestation kav peb mus rau plaub thiab ib nrab lub hlis rau peb-toed sloths thiab yim rau cuaj lub hlis rau ob-toed sloths. Feem ntau, tsuas yog ib tug menyuam yug xwb. Cov poj niam yug me nyuam los ntawm kev dai ntawm tsob ntoo.

Cov menyuam mos yug lub taub hau ua ntej, nkag mus rau lawv niam lub plab mus rau nws lub mis. Nyob ntawd lawv cling thiab nqus ntawm cov teats, uas yog nyob rau hauv armpits ntawm ob txhais ceg pem hauv ntej. Cov menyuam mos lwj tseem nyob ntawm lawv niam lub pluab txhua lub sijhawm. Yog hais tias nws nqaim heev thaum viav vias los ntawm cov ceg, txawm tias me me sloths nce siab mus rau lawv niam lub nraub qaum thiab tom qab ntawd rov qab rau hauv nws lub plab.

Cov tub ntxhais hluas sloths pib noj cov zaub mov rau cov neeg laus thaum muaj hnub nyoog ntxov, thiab los ntawm ob thiab ib nrab lub hlis lawv noj lawv tus kheej. Tab sis cov me nyuam mos tau mus txog tsib lub hlis thiab tsuas yog tso niam lub cev thaum cuaj lub hlis. Lawv ua kev sib daj sib deev thaum muaj hnub nyoog ob thiab ib nrab mus rau peb xyoos.